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(The monthly data in the wdc-like format is here.)

                                      WDC for Geomagnetism, Kyoto
                                Hourly Equatorial Dst Values (FINAL)      
                                           DECEMBER   2000
      unit=nT                                                                                      UT
      1   2   3   4   5   6   7   8    9  10  11  12  13  14  15  16   17  18  19  20  21  22  23  24
DAY
 1  -20 -25 -29 -37 -44 -40 -35 -31  -22 -19 -20 -23 -24 -21 -26 -32  -35 -37 -34 -31 -28 -25 -22 -19
 2  -20 -23 -26 -28 -29 -25 -25 -20  -15 -13 -12 -12 -10  -8 -10 -12  -17 -16 -14 -12 -11 -11 -12 -11
 3  -12 -16 -19 -18  -6   0  -5  -9   -7  -3  -4  -4  -3  -1  -6  -5   -7 -10 -15 -15 -16 -15 -16 -19
 4  -22 -21 -28 -31 -34 -30 -29 -27  -27 -24 -19 -14 -12 -13 -12 -10  -10  -7  -6  -6 -12 -14 -17 -16
 5  -23 -29 -32 -33 -34 -30 -29 -23  -18 -12  -7  -3  -2  -4  -5  -5   -7  -3   3   5   4   6   7   9

 6   10   6   2  -1  -1  -4  -5  -4   -1   3   2   7   9   2  -7  -9  -13 -16  -6  -3  -4  -8  -5  -1
 7    0  -8 -14 -18 -18 -18 -21 -11   -5 -16   0   7   3   0   1  -3  -10 -11 -10  -6  -7 -11  -3   2
 8   13  14  -3  -4   1   1  -2   2   -1 -12 -10  -5   8  -3  -4 -10  -11 -10 -14 -15 -15 -21 -13  -8
 9   -8 -10 -11 -13 -13 -24 -17 -11   -8 -11 -14 -11  -4  -3  -3  -8   -9 -15 -15 -16 -10 -10 -11  -8
10   -4  -3  -9 -16 -17 -17 -16 -12  -12 -13  -5  -1   0   3   4   4    3   0  -6  -9 -10  -7  -8  -5

11   -5  -5  -4  -7  -9  -9  -8 -11  -11  -6  -2  10  11  14  14   9   -3  -4   0   4   5   6   6   5
12    4   0  -3  -5  -7  -9 -11 -13  -10 -10  -8  -6  -1   5   7   2   -2  -2   2   5   6   7   8  14
13   14   9   4   1   0   0  -1  -2    0  -2  -4  -2   1   4   6   3    0   4   7  12  14  15  15  16
14   14  12  11   9   5   0   1   2    4   9  10   8  10  12  10   6    4   6   6   6   7   8   8   9
15    9  10   8   5   4   5   5   6    4   3   1   3   5   8  13  13   10  11  13  12  11  12  11  12

16   12  12  14  15  13  10   7   2    3   5   6   8  10  10  15  18   16  16  17  15  17  12  10   8
17    6   5   1   0   2   3   0  -3   -2  -3 -10 -16 -17  -8  -9 -13  -13 -16 -17  -8  -3  -4  -5  -3
18   -3  -4 -11 -12 -11 -11 -14 -13  -18 -19 -21 -21 -15 -11  -4  -5   -8  -9 -10 -14 -25 -24 -23 -20
19  -16 -14 -14 -15 -16 -13 -12  -9   -3   2   1   5   3   1  -1  -8  -11 -12  -9  -5  -4  -7 -10  -8
20   -8 -10  -7  -3  -1  -1  -1  -1    1   3   2   4   6   5   3  -2   -9 -12 -10  -9 -11 -11 -13  -9

21   -6  -4  -3  -3   0   4   6   5    3   1   3   4   3   3   4   6    5  10  13  12  15  20  20  17
22   13  10   4   1  -1   2   2   1   -1   3   6   9  10  12  14  13    8   9  14  19  23  19   2 -11
23  -24 -33 -45 -55 -62 -57 -53 -50  -49 -48 -48 -50 -44 -39 -35 -37  -35 -35 -30 -28 -23 -18 -10  -9
24  -10 -16 -24 -29 -33 -29 -26 -23  -24 -19 -18 -13 -14 -14  -9  -3   -4  -4   0  -5  -4   1   9  22
25   29  24  20  18  23  26  20  19   14  11   5   6   0   7   3 -10   -8  -4  -2   1   4   9   9   8

26    9   9   4  -1  -4  -6  -8  -9  -10 -14 -16 -11  -7  -5  -3   2    4   6   4   4  -3  -1   3   5
27    6   7   8  12  11  12   9  14   11   5   2   7   6   1  -7 -12  -14 -18 -18 -22 -23 -18 -13 -12
28  -11 -12 -13 -11 -12 -12 -15 -19  -19 -17 -16 -11  -6   0   8  11    6   5   7   6   2   0   3  10
29   12  11  11   4  -2  -5 -10 -14  -19 -19 -16 -12 -11  -9  -5   0    9  14  15  12   7   2  -1   1
30    1   1   2   5   5   4   2   0   -2  -5  -8  -6 -13 -17 -17 -10   -2   1   2   2   2   5   5   0

31   -2  -1   1   1   1   3   5   7    7   7   3   0  -2  -4  -2   2    2   4   6   7   6   8   9   8